Question

A can finsh a work twice than b. If they together work in 12 days, then how many days b alone can finish it ​

Answer 1

Answer:

36 days

Step-by-step explanation:

let work done by b be x units

then work done by a is x/2 units

work done by b in 1 day = 1/x

work done by a in 1 day = 2/x

both of them can complete work in 12 days

1 day work by both = 1/12

1/x + 2/x = 1/12

3/x= 1/12

x= 36

b alone can do a work in 36 days